-88.15% is the change from 540 to 64
Calculation steps:
[( 64 - 540 ) ÷ 540] x 100 = -88.15%
Formula
Percentage change = [(64 - 540) / 540] x 100
Subtract the new number by the original number
64 - 540 = -476
-476 ÷ 540 = -0.8814814814814815
-0.8814814814814815 x 100 = -88.15%